Click to subscribe for free! http://bit.ly/POIaN7 Links to learn more and sources below. http://www.twitter.com/tweetsauce http://www.facebook.com/VsauceGaming Music by Jake Chudnow: https://soundcloud.com/jakechudnow null Great video from Veritasium about the WORLD'S LONGEST POSSIBLE STRAW: https://www.youtube.com/watch?v=HUmZrtiXDik Vsauce video about nothing: https://www.youtube.com/watch?v=K93zcgFsynk Vsauce video about helium running out (and other things): https://www.youtube.com/watch?v=DU3OdTLuHf0 Vsauce video about being naked in space: https://www.youtube.com/watch?v=lD08CuUi_Ek Earth mass gained and lost: http://gizmodo.com/5882517/did-you-know-that-earth-is-getting-lighter-every-day Earth mass gained from sunlight: http://image.gsfc.nasa.gov/poetry/ask/a11325.html Limit of atmospheric pressure: http://en.wikipedia.org/wiki/Suction Buoyancy: http://en.wikipedia.org/wiki/Buoyancy Buoyancy caused by air: http://www.madsci.org/posts/archives/2010-03/1267798222.Ph.r.html Awesome diagram of Earth's atmosphere: http://library.thinkquest.org/C003124/en/atmos.htm Pic of meteor falling to Earth: http://www.nasa.gov/mission_pages/station/multimedia/gallery/iss028e024847.html PDF about space-matter entering Earth: http://static.icr.org/i/pdf/technical/Moon-Dust-and-the-Age-of-the-Solar-System.pdf Links about breathes and molecules: http://www.vendian.org/envelope/dir2/breath.html http://rsloan.newsvine.com/_news/2009/05/03/2768580-the-odds-that-youll-breathe-a-single-molecule-of-air-that-once-traveled-through-the-lungs-of-jesus http://www.thehappyself.com/happiness-challenge-1-100-breaths Brain metabolism: http://www.acnp.org/g4/gn401000064/ch064.html Components of inhaled and exhaled air: http://en.wikipedia.org/wiki/Breathing#Breathing_in_gas